# Pool Chem Calculator vs Tax Protection Plus

The clearest difference is in-app purchases: Tax Protection Plus at none against Pool Chem Calculator's 1. Pool Chem Calculator's advantage is update cadence (every 6 days vs every 11 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Pool Chem Calculator sells 1 in-app purchase, starting at $1.99 per month. Tax Protection Plus asks for nothing beyond the download.

Pool Chem Calculator ships an update every 6 days, Tax Protection Plus every 11 months. The most recent releases landed on September 18, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Pool Chem Calculator | Tax Protection Plus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (36 ratings)](https://appshunter.io/ios/app/pool-chem-calculator/id1453351222/reviews)** | — |
| Number of ratings | **36** | — |
| Positive reviews | 36.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 6 days** | Every 11 months |
| Monetization | Free with in-app purchases | — |
| Size | 113 MB | 71 MB |
| Requires iOS | 16.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Gunter Business Solutions Inc](https://appshunter.io/developer/1453351221) | [Tax Protection Plus, LLC](https://appshunter.io/developer/1814620999) |

## What reviewers say

### Pool Chem Calculator

[App page](https://appshunter.io/ios/app/pool-chem-calculator/id1453351222)

This app helps manage pool chemistry with 24 specialized calculators for dosing, pH, and more. It features a customizable maintenance calendar, equipment tracking, and easy report sharing for up to 100 pools. Ideal for maintaining a clean and swim-ready pool.

**Highlights:** 24 precision pool chemical calculators, Customizable maintenance calendar with notifications, Equipment tracking and management, Multi-user pool sharing, Professional report builder, Smart pool route mapping

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 Pool Subscription | $1.99 | per month |


### Tax Protection Plus

[App page](https://appshunter.io/ios/app/tax-protection-plus/id6745964310)

**Features:** Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is Pool Chem Calculator free?

Pool Chem Calculator is free to download, with in-app purchases available.

### Is Tax Protection Plus free?

Tax Protection Plus is free to download, with no in-app purchases.

### Do Pool Chem Calculator or Tax Protection Plus have ads?

Both Pool Chem Calculator and Tax Protection Plus show ads.

### Which is updated more often, Pool Chem Calculator or Tax Protection Plus?

Pool Chem Calculator ships an update every 6 days, and Tax Protection Plus every 11 months. Most recently, Pool Chem Calculator was updated on September 18, 2026 and Tax Protection Plus on September 13, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*